Inorganic Chemicals Industry >

2022 , Vol. 54 >Issue 4: 10 - 16

DOI: https://doi.org/10.19964/j.issn.1006-4990.2021-0553

Resource utilization of phosphogypsum

Hemihydrate phosphogypsum as used to solidify the raw phosphogypsum to prepare composite cementitious material

  • Xun MIAO ,
  • Yuexian LU ,
  • Rusong FU ,
  • Dewen KONG ,
  • Rubin FU ,
  • Qun HU
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  • 1. College of Civil Engineering,Guizhou University,Guiyang,Guizhou 550025,China
    2. No.1 Construction Engineering Co.,Ltd,Guizhou Construction Engineering Group
    3. School of Architectural Engineering

Received date: 2021-09-10

  Online published: 2022-04-18

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Abstract

The phosphogypsum-based composite cementitious material（PBCM）was prepared by using hemihydrate phospho-gypsum（HPG）with ash calcium powder and cement to solidify the raw phosphogypsum（RPG）.The single factor experiments was carried out to investigate the influence of HPG content on PBCM slurry performance,and the effects of various admixtures on the strength and water resistance of PBCM were further explored through orthogonal experiments.The results showed that HPG was an effective and environmental solidification material for RPG,more than 20%（mass fraction）of HPG could com-pletely solve the bleeding problem and significantly shorten the setting time of PBCM slurry.The slurry fluidity was effectively improved by more than 40%（mass fraction）of HPG.The HPG,ash calcium powder and cement could effectively improve the strength of PBCM.The effect of cement on water resistance was significant.Microscopic analysis was revealed that the main hydrates of PBCM were CaSO4·2H2O and ettringite,which were interweaved with each other and grow between the RPG crystals,so as to realize the effective solidification of RPG.

Key words： raw phosphogypsum; hemihydrate phosphogypsum; phosphogypsum-based composite cementitious materials; strength; softening coefficient

Cite this article

Xun MIAO , Yuexian LU , Rusong FU , Dewen KONG , Rubin FU , Qun HU . Hemihydrate phosphogypsum as used to solidify the raw phosphogypsum to prepare composite cementitious material[J]. Inorganic Chemicals Industry, 2022 , 54(4) : 10 -16 . DOI: 10.19964/j.issn.1006-4990.2021-0553

References

[1] 贾兴文, 吴洲, 马英. 磷石膏建材资源化利用现状[J]. 材料导报, 2013, 27(23):139-141,146.
[2] 吴照洋, 张永兴, 张利珍, 等. β石膏相组成和杂质含量对其性能的影响[J]. 无机盐工业, 2021, 53(9):67-71.
[3] ZHOU J, LI X, ZHAO Y, et al. Preparation of paper-free and fiber-free plasterboard with high strength using phosphogypsum[J]. Con-struction and Buliding Materials, 2020, 243.Doi: 10.1016/j.conbu-ildmat.2020.118091.
[4] SHEN Y, QING J, CHAI J, et al. Calcium sulphoaluminate cements made with phosphogypsum:Production issues and material proper-ties[J]. Cement & Concrete Composites, 2014, 48:67-74.
[5] YANG L, ZHANG Y, YAN Y. Utilization of original phosphogypsum as raw material for the preparation of self-leveling mortar[J]. Journal of Cleaner Production, 2016, 127:204-213.
[6] 马丽萍. 磷石膏资源化综合利用现状及思考[J]. 磷肥与复肥, 2019, 34(7):5-9.
[7] 李逸晨, 杨再银. 磷石膏综合利用技术发展动态[J]. 磷肥与复肥, 2018, 33(2):1-6.
[8] 谭明洋, 张西兴, 相利学, 等. 磷石膏作水泥缓凝剂的研究进展[J]. 无机盐工业, 2016, 48(7):4-6.
[9] AMRANI M, TAHA Y, KCHIKACH A, et al. Phosphogypsum recycling:New horizons for a more sustainable road material application[J]. Journal of Building Engineering, 2020, 30.Doi: 10.1016/j.jobe.2020.101267.
[10] JIANG G, WU A, WANG Y, et al. Low cost and high efficiency utilization of hemihydrate phosphogypsum：Used as binder to prepare filling material[J]. Construction and Buliding Materials, 2018, 167(167):263-270.
[11] 孙世杰, 周贵云. 磷石膏制备β-半水建筑石膏技术研究[J]. 磷肥与复肥, 2019, 34(7):18-19,49.
[12] 张毅, 王小鹏, 李东旭. 利用原状磷石膏制备石膏基复合胶凝材料的力学性能[J]. 南京工业大学学报:自然科学版, 2011, 33(1):68-73.
[13] HUA S, WANG K, YAO X, et al. Effects of fibers on mechanical properties and freeze-thaw resistance of phosphogypsum-slag based cementitious materials[J]. Construction and Buliding Materials, 2016, 121:290-299.
[14] ZHOU S, LI X, ZHOU Y, et al. Effect of phosphorus on the properties of phosphogypsum-based cemented backfill[J]. Journal of hazardous materials, 2020, 399.Doi: 10.1016/j.jhazmat.2020.122993.
[15] 于万增, 潘俊廷, 朱会荣, 等. 原状磷石膏用作混凝土添加剂的性能研究[J]. 新型建筑材料, 2020, 47(4):28-30,42.
[16] 周灿灿, 郭小雨, 邓先功, 等. 原状磷石膏基水硬性胶凝材料的制备与性能表征[J]. 安徽工业大学学报:自然科学版, 2019, 36(1):29-34.
[17] HUANG Y, LIN Z. Investigation on phosphogypsum-steel slag-granulated blast-furnace slag-limestone cement[J]. Construction and Buliding Materials, 2010, 24(7):1296-1301.
[18] CHEN X, GAO J, LIU C, et al. Effect of neutralization on the setting and hardening characters of hemihydrate phosphogypsum plaster[J]. Construction and Buliding Materials, 2018, 190:53-64.
[19] JIN Z, MA B, SU Y, et al. Effect of calcium sulphoaluminate cement on mechanical strength and waterproof properties of beta-hemihydrate phosphogypsum[J]. Construction and Buliding Materials, 2020, 242.Doi: 10.1016/j.conbuildmat.2020.118198.
[20] 罗双, 付汝宾, 孔德文, 等. 掺合料对磷石膏基复合胶凝材料耐水性及强度的影响综述[J]. 无机盐工业, 2020, 52(11):6-11.
[21] 姜关照, 吴爱祥, 王贻明, 等. 生石灰对半水磷石膏充填胶凝材料性能影响[J]. 硅酸盐学报, 2020, 48(1):86-93.
[22] 王健. 发泡磷石膏轻质材料的制备与基本性能[D]. 哈尔滨:哈尔滨工业大学, 2016.
[23] 兰文涛, 吴爱祥, 王贻明, 等. 基于正交实验的半水磷石膏充填配比优化[J]. 中国有色金属学报, 2019, 29(5):1083-1091.
[24] ZHOU P, WU H, XIA Y. Influence of synthetic polymers on the mechanical properties of hardened β-calcium sulfate hemihydrate plasters[J]. Journal of Industrial and Engineering Chemistry, 2016, 33:355-361.
[25] 钱觉时, 余金城, 孙化强, 等. 钙矾石的形成与作用[J]. 硅酸盐学报, 2017, 45(11):1569-1581.
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